1
|
Razavi P, Baldwin G, Vingopoulos F, Garg I, Tracy J, Wescott H, Choi H, Zeng R, Lains I, Husain D, Kim LA, Vavvas DG, Miller JB. Associations of quantitative contrast sensitivity with wide-field swept-source optical coherence tomography angiography in retinal vein occlusion. Graefes Arch Clin Exp Ophthalmol 2024; 262:789-799. [PMID: 37955700 DOI: 10.1007/s00417-023-06288-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2023] [Revised: 09/20/2023] [Accepted: 10/19/2023] [Indexed: 11/14/2023] Open
Abstract
PURPOSE To investigate associations between contrast sensitivity (CS) and vascular metrics on wide-field swept-source optical coherence tomography angiography (WF-SS-OCTA) in patients with retinal vein occlusion (RVO). METHODS This prospectively recruited, cross-sectional observational study included RVO patients who underwent quantitative CS function (qCSF) testing and WF-SS-OCTA using 3 × 3, 6 × 6, and 12 × 12 mm angiograms on the same day. The study measured several qCSF outcomes and WF-SS-OCTA vascular metrics, including vessel density (VD), vessel skeletonized density (VSD), and foveal avascular zone (FAZ). The data were analyzed using multivariable regression analysis controlling for age and central subfield thickness (CST). RESULTS A total of 43 RVO eyes of 43 patients and 30 fellow eyes were included. In RVO eyes, multiple vascular metrics were associated with CS outcomes but not visual acuity (VA). On 12 × 12 images, CS thresholds at 1 cpd, 1.5 cpd, and 3 cpd were significantly associated with VD and VSD, but VA was not. When comparing standardized regression coefficients, we found that vascular metrics had a larger effect size on CS than on VA. For instance, the standardized beta coefficient for FAZ area and CS at 6 cpd (β* = - 0.46, p = 0.007) was larger than logMAR VA (β* = 0.40, p = 0.011). CONCLUSION Microvascular changes on WF-SS-OCTA in RVO had a larger effect size on CS than VA. This suggests CS may better reflect the microvascular changes of RVO compared to VA. qCSF-measured CS might be a valuable adjunct functional metric in evaluating RVO patients.
Collapse
Affiliation(s)
| | | | | | - Itika Garg
- Harvard Retinal Imaging Lab, Boston, MA, USA
| | - Jack Tracy
- Harvard Retinal Imaging Lab, Boston, MA, USA
| | | | - Hanna Choi
- Harvard Retinal Imaging Lab, Boston, MA, USA
| | | | - Ines Lains
- Harvard Retinal Imaging Lab, Boston, MA, USA
- Retina Service, Massachusetts Eye and Ear, Boston, MA, USA
| | - Deeba Husain
- Retina Service, Massachusetts Eye and Ear, Boston, MA, USA
| | - Leo A Kim
- Retina Service, Massachusetts Eye and Ear, Boston, MA, USA
| | | | - John B Miller
- Harvard Retinal Imaging Lab, Boston, MA, USA.
- Retina Service, Massachusetts Eye and Ear, Boston, MA, USA.
| |
Collapse
|
2
|
Cheng W, Wang W, Song Y, Lin F, Duan Y, Xie L, Jin K, Weinreb RN, Zhang X. Choriocapillaris and progressive ganglion cell-inner plexiform layer loss in non-glaucomatous eyes. Br J Ophthalmol 2023; 107:1638-1644. [PMID: 35977800 DOI: 10.1136/bjo-2022-321277] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2022] [Accepted: 07/31/2022] [Indexed: 11/04/2022]
Abstract
AIMS To explore the relationship between choriocapillaris (CC) flow deficit percentage (FD%) and ganglion cell-inner plexiform layer (GCIPL) thickness in a population-based sample of non-glaucomatous eyes. METHODS This is a longitudinal cohort study and prospective cross-sectional study. Non-glaucoma Chinese subjects aged 18 years or older were enrolled. All participants underwent a detailed ophthalmic examination, including swept-source optical coherence tomography (SS-OCT) and SS-OCT angiography. Average, inner average, outer average and nine Early Treatment Diabetic Retinopathy Study sub-regions of GCIPL thickness and CC FD% were measured. The correlation between CC FD% and GCIPL was assessed using a linear regression model, and the relationship between the rate of change of GCIPL thickness and CC FD% was further validated in a 2year longitudinal study. RESULTS In the cross-sectional study including 3514 participants (3514 non-glaucoma eyes), a higher CC FD% was significantly associated with a thinner GCIPL (β=-0.32; 95% CI -0.43 to -0.21; p<0.001). Further, in a longitudinal study (453 eyes of 453 participants), a faster increase in CC FD% was found to be significantly associated with a faster decrease in GCIPL thickness (β=-0.10; 95% CI -0.17 to -0.03; p=0.004) after adjusting for age, sex, axial length and image quality score. CONCLUSIONS This is the first time to show that CC FD% and GCIPL thickness were correlated in both cross-sectional and longitudinal studies of non-glaucomatous individuals, which may potentially provide further insights on the role of CC perfusion in glaucoma development and progression.
Collapse
Affiliation(s)
- Weijing Cheng
- Zhongshan Ophthalmic Center, State Key Laboratory of Ophthalmology, Sun Yat-Sen University, Guangzhou, China
| | - Wei Wang
- Zhongshan Ophthalmic Center, State Key Laboratory of Ophthalmology, Sun Yat-Sen University, Guangzhou, China
| | - Yunhe Song
- Zhongshan Ophthalmic Center, State Key Laboratory of Ophthalmology, Sun Yat-Sen University, Guangzhou, China
| | - Fengbin Lin
- Zhongshan Ophthalmic Center, State Key Laboratory of Ophthalmology, Sun Yat-Sen University, Guangzhou, China
| | - Yongbo Duan
- Southern Medical University, Guangzhou, Guangdong, China
| | - Liu Xie
- Yiyang Central Hospital, Yiyang, Hunan Province, China
| | - Kai Jin
- Fifth Affiliated Hospital of Sun Yat-sen University, Zhuhai, China
| | | | - Xiulan Zhang
- Zhongshan Ophthalmic Center, State Key Laboratory of Ophthalmology, Sun Yat-Sen University, Guangzhou, China
| |
Collapse
|
3
|
Neurovascular injury associated non-apoptotic endothelial caspase-9 and astroglial caspase-9 mediate inflammation and contrast sensitivity decline. Cell Death Dis 2022; 13:937. [PMID: 36347836 PMCID: PMC9643361 DOI: 10.1038/s41419-022-05387-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2022] [Revised: 10/25/2022] [Accepted: 10/27/2022] [Indexed: 11/11/2022]
Abstract
Retinal neurovascular injuries are a leading cause of vision loss in young adults presenting unmet therapeutic needs. Neurovascular injuries damage homeostatic communication between endothelial, pericyte, glial, and neuronal cells through signaling pathways that remain to be established. To understand the mechanisms that contribute to neuronal death, we use a mouse model of retinal vein occlusion (RVO). Using this model, we previously discovered that after vascular damage, there was non-apoptotic activation of endothelial caspase-9 (EC Casp9); knock-out of EC Casp9 led to a decrease in retinal edema, capillary ischemia, and neuronal death. In this study, we aimed to explore the role of EC Casp9 in vision loss and inflammation. We found that EC Casp9 is implicated in contrast sensitivity decline, induction of inflammatory cytokines, and glial reactivity. One of the noted glial changes was increased levels of astroglial cl-caspase-6, which we found to be activated cell intrinsically by astroglial caspase-9 (Astro Casp9). Lastly, we discovered that Astro Casp9 contributes to capillary ischemia and contrast sensitivity decline after RVO (P-RVO). These findings reveal specific endothelial and astroglial non-apoptotic caspase-9 roles in inflammation and neurovascular injury respectively; and concomitant relevancy to contrast sensitivity decline.
Collapse
|
4
|
Maganti N, Squires N, Mishra S, Bomdica P, Nigam D, Shapiro A, Gill MK, Lyon AT, Mirza RG. Contrast Sensitivity Testing in Age-Related Macular Degeneration Using Motion Diamond Stimulus. Clin Ophthalmol 2022; 16:507-515. [PMID: 35241907 PMCID: PMC8887862 DOI: 10.2147/opth.s342188] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2021] [Accepted: 01/14/2022] [Indexed: 11/23/2022] Open
Abstract
Purpose This study was performed to characterize changes in contrast sensitivity (CS) that occur in patients with age-related macular degeneration (AMD) using a novel test, the motion diamond stimulus (MDS). Methods This was a cross-sectional study in which 20 subjects with unilateral exudative AMD (eAMD) and contralateral dry AMD received 3 assessments: the Pelli-Robson (PR) CS Chart, the MDS test, and a visual function questionnaire-25 (VFQ-25). CS results from the PR, and MDS tests were compared across 3 groups: eyes with eAMD vs dry AMD, eAMD vs control, dry AMD vs control. Healthy, undilated eyes from another study served as the control group. Significance was determined using ANOVA analysis for the MDS output parameters (α: overall contrast threshold, β: adaptability of the visual system) and PR logCS. Patients were also administered the VFQ-25 to assess vision-related quality of life. Results The ANOVA of the MDS data demonstrated a significant difference in visual function according to the β parameter of the 3 groups, but no significant difference in the α parameter. PR CS results for the 3 groups were significantly different, further supporting the MDS results. Post-hoc analysis showed a significant difference in β and PR log CS between the eAMD and control eyes. Conclusion The MDS test is valuable in discerning CS impairments in patients with AMD. It can provide further insight into the visual changes experienced by patients with AMD and has potential to quantify visual function changes that are not found on visual acuity testing alone.
Collapse
Affiliation(s)
- Nenita Maganti
- Department of Ophthalmology, Northwestern University, Chicago, IL, USA
| | - Natalie Squires
- Department of Ophthalmology, Northwestern University, Chicago, IL, USA
| | - Shubhendu Mishra
- Department of Ophthalmology, Northwestern University, Chicago, IL, USA
| | - Prithvi Bomdica
- Department of Ophthalmology, Northwestern University, Chicago, IL, USA
| | - Divya Nigam
- Department of Psychology and Department of Computer Science, American University, Washington, DC, USA
| | - Arthur Shapiro
- Department of Psychology and Department of Computer Science, American University, Washington, DC, USA
| | - Manjot K Gill
- Department of Ophthalmology, Northwestern University, Chicago, IL, USA
| | - Alice T Lyon
- Department of Ophthalmology, Northwestern University, Chicago, IL, USA
| | - Rukhsana G Mirza
- Department of Ophthalmology, Northwestern University, Chicago, IL, USA
- Correspondence: Rukhsana G Mirza, Department of Ophthalmology, Northwestern University, Chicago, IL, USA, Tel +1 312-908-8152, Email
| |
Collapse
|